Improvement in processes of refining sugar



FRANZ O. MATTHIESSEN, OF NEW YORK, N. Y.

IMPROVEMENT IN PROCESSES OF REFINING SUGAR.

Specification forming part of Letters Patent No. 162,244., dated April 20, 1875; application filed April 12, 1875.

(Men 0.

To all whom it may concern Beit known that I, FRANZ 0. MATTHIESSEN, of New York, N. Y., have invented an Improved Process of Refining Sugar, of which the following is a specification:

My improvement relates to a modification of that process of refining sugar whereby the entire sugar-mass is converted into cotteesugar without leaving any fluid remainder in the form of sirup. As I have invented several modifications in that proc ss, for which I am about applying for patents, I shall, for convenience, designate the present application as Case 0.

The modification of the process to which my present application refers includes the boiling of the clarified sugar-liquor in the vacuum-pan until the usual crystallization has taken place, and the cooling and hardening of the sugar-mass discharged from the vacuum-pan, and the subsequent disintegration thereof, and the division of such disintegrated sugar into small masses or thin layers, but instead of re heating such small masses or thin layers in mono, I subject them to a gentle heat in the open air, which is continued until nearly all the water they contain is evaporated and they have acquired the condition of a granular material, substantially like what is known as free-grained coffee-sugar. In thus applying heat to the disintegrated material the temperature should not be allowed to exceed 212 Fahrenheit. The distinctive characteristic of my improvement is the subjection of the cold disintegrated sugar-mass to a gentle heat applied in the open air.

I claim as my invention The improved process of refining sugar herein described, which, in addition to boiling the clarified sugar-liquor in the vacuum-pan and disintegrating the product discharged from the vacuum-pan after it is cooled and hardened, consists in subjecting the cold disintegrated sugar-mass to gentle heat applied in the open air, as set forth.

Witnesses: F. 0. MATTHIESSEN.

M. L. SENDERLING, O. H. KRAUSE. 

